16401359999 has 8 divisors (see below), whose sum is σ = 17003106432. Its totient is φ = 15804155520.

The previous prime is 16401359993. The next prime is 16401360071. The reversal of 16401359999 is 99995310461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16401359999 - 2⁴ = 16401359983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401359993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128134 + ... + 1142579.

It is an arithmetic number, because the mean of its divisors is an integer number (2125388304).

Almost surely, 2^16401359999 is an apocalyptic number.

16401359999 is a deficient number, since it is larger than the sum of its proper divisors (601746433).

16401359999 is a wasteful number, since it uses less digits than its factorization.

16401359999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270977.

The product of its (nonzero) digits is 2361960, while the sum is 56.

The spelling of 16401359999 in words is "sixteen billion, four hundred one million, three hundred fifty-nine thousand, nine hundred ninety-nine".